GB2125179B - Distributed sensors - Google Patents

Distributed sensors

Info

Publication number
GB2125179B
GB2125179B GB08222372A GB8222372A GB2125179B GB 2125179 B GB2125179 B GB 2125179B GB 08222372 A GB08222372 A GB 08222372A GB 8222372 A GB8222372 A GB 8222372A GB 2125179 B GB2125179 B GB 2125179B
Authority
GB
United Kingdom
Prior art keywords
distributed sensors
sensors
distributed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08222372A
Other versions
GB2125179A (en
Inventor
Vincent Andrei Handerek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB08222372A priority Critical patent/GB2125179B/en
Priority to DE19833325945 priority patent/DE3325945A1/en
Publication of GB2125179A publication Critical patent/GB2125179A/en
Application granted granted Critical
Publication of GB2125179B publication Critical patent/GB2125179B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03638—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only
    • G02B6/03644—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only arranged - + -
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G01L1/243—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using means for applying force perpendicular to the fibre axis
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
    • G02B6/2835—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. couplers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
    • G02F1/3131—Digital deflection, i.e. optical switching in an optical waveguide structure in optical fibres
GB08222372A 1982-08-03 1982-08-03 Distributed sensors Expired GB2125179B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB08222372A GB2125179B (en) 1982-08-03 1982-08-03 Distributed sensors
DE19833325945 DE3325945A1 (en) 1982-08-03 1983-07-19 Fibre-optical sensor and a sensor device containing the former

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08222372A GB2125179B (en) 1982-08-03 1982-08-03 Distributed sensors

Publications (2)

Publication Number Publication Date
GB2125179A GB2125179A (en) 1984-02-29
GB2125179B true GB2125179B (en) 1986-08-06

Family

ID=10532077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08222372A Expired GB2125179B (en) 1982-08-03 1982-08-03 Distributed sensors

Country Status (1)

Country Link
GB (1) GB2125179B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026141A (en) * 1981-08-24 1991-06-25 G2 Systems Corporation Structural monitoring system using fiber optics
US4927232A (en) * 1985-03-18 1990-05-22 G2 Systems Corporation Structural monitoring system using fiber optics
US4545253A (en) * 1983-08-29 1985-10-08 Exxon Production Research Co. Fiber optical modulator and data multiplexer
GB2155621B (en) * 1984-03-06 1988-01-06 Standard Telephones Cables Ltd Optical fibre sensors
JPS61221629A (en) * 1985-03-15 1986-10-02 Sharp Corp Pressure sensitive element
GB8513542D0 (en) * 1985-05-29 1985-07-03 Gen Electric Co Plc Fibre optic coupler
GB8519608D0 (en) * 1985-08-05 1985-09-11 Gen Electric Co Plc Interferometers
DE3771865D1 (en) * 1987-02-13 1991-09-05 G2 Systems Corp FIBER OPTICAL CONSTRUCTION MONITORING SYSTEM.
GB8704540D0 (en) * 1987-02-26 1987-04-01 Bicc Plc Optical sensors
GB2213588B (en) * 1987-12-08 1991-07-31 Plessey Co Plc Improvements relating to optical sensors
US5627934A (en) * 1994-08-03 1997-05-06 Martin Marietta Energy Systems, Inc. Concentric core optical fiber with multiple-mode signal transmission
GB2379279B (en) * 2001-08-31 2005-10-26 Gsi Lumonics Ltd Laser processing system and optical fibres
DE102013107276A1 (en) 2012-07-11 2013-10-02 Lios Technology Gmbh Device for distributed optical pressure measurement in borehole, comprises optical light guide with core, which guides light from light source along measurement path, and casing that reacts to pressure change with elongation or contraction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1437067A (en) * 1974-08-08 1976-05-26 Standard Telephones Cables Ltd Optical waveguide couplers
US4012113A (en) * 1975-12-17 1977-03-15 Herwig Werner Kogelnik Adjustable optical switch or modulator

Also Published As

Publication number Publication date
GB2125179A (en) 1984-02-29

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940803